Create a measurable baseline
A BOQ should align with drawings and specifications, define units clearly, and separate provisional or uncertain work.
Track commitments and actuals
Record purchase orders, subcontract awards, delivered quantities, certified work, paid amounts and remaining commitments by cost code.
Control changes before work starts
Price and approve variations with supporting measurements, programme effect and revised forecast. Unrecorded site instructions are a major cause of disputes.
Forecast the final cost
Update estimate-at-completion using actual productivity, current rates, approved changes, risks and remaining scope—not only original budget less payments.